Now showing items 1-20 of 44

  • A competitive variable neighbourhood search algorithm for the blocking flow shop problem 

    Ribas Vila, Immaculada; Companys Pascual, Ramón; Tort-Martorell Llabrés, Xavier (2013-12-23)
    Article
    Restricted access - publisher's policy
  • A discussion on the selection of prototypes for kansei engineering study 

    Marco Almagro, Lluís; Tort-Martorell Llabrés, Xavier; Schütte, Simon (2016)
    Conference report
    Restricted access - publisher's policy
    One of the steps in a kansei engineering study is the evaluation of prototypes by users. Usually, the participants in the study give ratings to each one of the prototypes either using a semantic differential method or a ...
  • Algoritmo para la elección de fracciones factoriales con óptima proyección 

    Tort-Martorell Llabrés, Xavier; Prat Bartés, Albert (Universitat Politècnica de Barcelona. Centre de Càlcul, 1986-06)
    Article
    Open Access
    En cualquier proceso industrial hay dos fases, diseño del producto y producción donde experimentos cuidadosamente diseñados pueden contribuir enormemente a aumentar la calidad del producto final. En ambos casos el interés ...
  • A maturity model for the information-driven SME 

    Parra, Xileidys; Tort-Martorell Llabrés, Xavier; Ruiz Viñals, Carmen; Álvarez Gómez, Fernando (OmniaScience, 2019-04)
    Article
    Open Access
    Purpose: This article presents a maturity model for the evaluation of the information-driven decision-making process (DMP) in small and medium enterprises. This model is called “Simplified Holistic Approach to DMP Evaluation ...
  • An approach to disaggregating total household water consumption into major end-uses 

    Fontdecaba Rigat, Sara; Sánchez Espigares, Josep Anton; Marco Almagro, Lluís; Tort-Martorell Llabrés, Xavier; Cabrespina, Francesc; Zubelzu, Jordi (2013-01-27)
    Article
    Restricted access - publisher's policy
    The aim of this project is to assign domestic water consumption to different devices based on the information provided by the water meter. We monitored a sample of Barcelona and Murcia with flow switches that recorded ...
  • An efficient discrete artificial bee colony algorithm for the blocking flow shop problem with total flowtime minimization 

    Ribas Vila, Immaculada; Companys Pascual, Ramón; Tort-Martorell Llabrés, Xavier (2015-09-01)
    Article
    Open Access
    This paper presents a high performing Discrete Artificial Bee Colony algorithm for the blocking flow shop problem with flow time criterion. To develop the proposed algorithm, we considered four strategies for the food ...
  • An efficient hybrid iterated local search algorithm for the total tardiness blocking flow shop problem 

    Ribas Vila, Immaculada; Companys Pascual, Ramón; Tort-Martorell Llabrés, Xavier (2012-09-04)
    External research report
    Open Access
    This paper deals with the blocking flow shop problem and proposes an Iterated Local Search (ILS) procedure combined with a variable neighbourhood search (VNS) for the total tardiness minimization. The proposed ILS makes ...
  • An efficient iterated local search algorithm for the total tardiness blocking flow shop problem 

    Ribas Vila, Immaculada; Companys Pascual, Ramón; Tort-Martorell Llabrés, Xavier (Taylor & Francis, 2013-04-27)
    Article
    Restricted access - publisher's policy
    This paper deals with the blocking flow shop problem and proposes an Iterated Local Search (ILS) procedure combined with a variable neighbourhood search (VNS) for the total tardiness minimisation. The proposed ILS makes ...
  • Application of Kansei Engineering to Design an Industrial Enclosure 

    Marco Almagro, Lluís; Tort-Martorell Llabrés, Xavier (2014)
    Conference report
    Open Access
    Kansei Engineering (KE) is a technique used to incorporate emotions in the product design process. Its basic purpose is discovering in which way some properties of a product convey certain emotions in its users. It is a ...
  • Assessment of information-driven decision-making in the SME 

    Parra Vivas, Xileidys; Tort-Martorell Llabrés, Xavier (2016)
    Conference report
    Open Access
    The use of analytics in decision -making processes is a key element for organizations to be competitive. However, experience indicates that many organizations still have not managed to fully understand how to use properly ...
  • BBVA: la innovación abierta en empresas de servicios 

    Ramis Pujol, Joan; Droege, Henning; Tort-Martorell Llabrés, Xavier (2013)
    Article
    Open Access
    La innovación abierta es un camino ideal para encontrar y desarrollar nuevas ideas. Una empresa de servicios, como una entidad financiera, también puede beneficiarse de ella, puesto que, por ejemplo, externalizando la ...
  • Blocking versus robustness in industrial contexts 

    Grima Cintas, Pedro; Marco Almagro, Lluís; Tort-Martorell Llabrés, Xavier (2017-01-01)
    Article
    Open Access
    The paper discusses the similarities and differences between blocking factors (blocked designs) and noise factors (robust designs) in industrial two-level factorial experiments. The discussion covers from the objectives ...
  • CHROMA: a maturity model for the information-driven decision-making process 

    Tort-Martorell Llabrés, Xavier; Parra, Xileidys (2017)
    Article
    Restricted access - publisher's policy
    A novel maturity model for the information-driven decision-making process (DMP) in organisations is presented. The 'circumplex hierarchical representation of organisation maturity assessment' (CHROMA) model was developed ...
  • Comparing three-step heuristics for the permutation flow shop problem 

    Ribas Vila, Immaculada; Companys Pascual, Ramón; Tort-Martorell Llabrés, Xavier (2010-03-03)
    Article
    Restricted access - publisher's policy
    In this paper a three steps heuristic for the permutation flow shop problem is proposed. The objective is to minimize the maximum time for completing the jobs, or the makespan. The first two steps are inspired by the NEH ...
  • Consequences of using estimated response values from negligible interactions in factorial designs 

    Xampeny Solani, Rafael; Grima Cintas, Pedro; Tort-Martorell Llabrés, Xavier (2018-12-21)
    Article
    Restricted access - publisher's policy
    This article analyzes the increase in the probability of committing type I and type II errors in assessing the significance of the effects when some properly selected runs have not been carried out and their responses have ...
  • Development of an open application for teaching statistics: conception and results 

    Serrahima de Cambra, Eduard; Marco Almagro, Lluís; Tort-Martorell Llabrés, Xavier; Grima Cintas, Pedro; Rodero de Lamo, Lourdes (2015)
    Conference report
    Open Access
    Different commercial statistical software packages exist that are appropriate for teaching statistics. However, free alternatives are scarce, and those existing suffer from problems (such as difficult installations and ...
  • Diseños factoriales fraccionales aplicación al control de calidad mediante el diseño de productos y procesos 

    Tort-Martorell Llabrés, Xavier (Universitat Politècnica de Catalunya, 1984-01-24)
    Doctoral thesis
    Open Access
    Los procesos industriales tienen tres fases diseño del producto del proceso y producción en las que experimentos cuidadosamente diseñados pueden aumentar la calidad del producto y la productividad del proceso. <br/>En ...
  • Disseny i implementació d’un cas pràctic d’introducció a l’estadística basat en la presa de decisions realistes sobre dades simulades 

    Tort-Martorell Llabrés, Xavier; Camps Lorente, Oriol; Grima Cintas, Pedro; Marco Almagro, Lluís; Puig Oriol, Xavier; Rodero de Lamo, Lourdes; Sánchez Espigares, Josep Anton; Solé Vidal, Ignasi; Riba Civil, Alexandre; Berenguer Guerra, Victor; Jurado Margarit, Adriana; Magriñà Amat, Carlos (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2013-02-08)
    Conference report / Conference lecture
    Open Access
    Un diagnòstic de les pràctiques d'estadística va portar a proposar per a una nova assignatura un joc competitiu en línia de presa de decisions basades en l'estadística. Aquest utilitza dades simulades i un web en què ...
  • Efficient heuristics for the parallel blocking flow shop scheduling problem 

    Ribas Vila, Immaculada; Companys Pascual, Ramón; Tort-Martorell Llabrés, Xavier (2017-05-15)
    Article
    Open Access
    We consider the NP-hard problem of scheduling n jobs in F identical parallel flow shops, each consisting of a series of m machines, and doing so with a blocking constraint. The applied criterion is to minimize the makespan, ...
  • Elaboració de material docent per a assignatures d'estadística industrial 

    Marco Almagro, Lluís; Grima Cintas, Pedro; Rodero de Lamo, Lourdes; Tort-Martorell Llabrés, Xavier; Sánchez Espigares, Josep Anton; Solé Vidal, Ignasi; Valls i Colom, Moisès; Corredoira González, Laura; Clot Razquin, Guillem; Fontdecaba Rigat, Sara (2009-02-12T13:11:17Z)
    Conference lecture / Conference report
    Open Access
    La finalitat del projecte és elaborar material d'ajuda i suport a la docència per assignatures relacionades amb l'estadística industrial. Ens centrem fonamentalment en les assignatures “Mètodes estadístics de l’enginyeria ...